1. tending to extinguish, suppress, or put an end to something
Usage: formal or legal usage
2. relating to or causing extinction; leading to the end or elimination of something
Usage: technical or specialized usage

Examples

• The court issued an extinctive judgment that terminated all prior claims.
• Extinctive measures were taken to eliminate the invasive species from the ecosystem.
• The new policy had an extinctive effect on outdated regulations.
• Extinctive forces in nature have shaped the fossil record over millions of years.
• The treaty contained extinctive clauses that nullified previous agreements.